Use this cable between two DTE devices (for instance two computers).
 (To Computer 1).
 (To Computer 1).
 (To Computer 2).
 (To Computer 2).
9 PIN D-SUB FEMALE to Computer 1.
25 PIN D-SUB FEMALE to Computer 2.
| D-Sub 9 | D-Sub 25 | ||
|---|---|---|---|
| Receive Data | 2 | 2 | Transmit Data | 
| Transmit Data | 3 | 3 | Receive Data | 
| Data Terminal Ready | 4 | 6+8 | Data Set Ready + Carrier Detect | 
| System Ground | 5 | 7 | System Ground | 
| Data Set Ready + Carrier Detect | 6+1 | 20 | Data Terminal Ready | 
| Request to Send | 7 | 5 | Clear to Send | 
| Clear to Send | 8 | 4 | Request to Send | 
Note: DSR & CD are jumpered to fool the programs to think that they are online.
| Contributor: | Joakim Ögren, Drew Sullivan, Niklas Edmundsson, Don Rifkin | 
| Source: | ? | 
  Copyright © The Hardware Book Team 1996-2004.
  May be copied and redistributed, partially or in whole, as appropriate.
  Document last modified: 2002-01-10